寄生是一种捕食者与被捕食者之间的关系，寄生者利用共生伙伴——宿主来获取食物。

Parasitism is a kind of predator-prey relationship in which one organism, the parasite, derives its food at the expense of its symbiotic associate, the host.

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这样就建立了“集成总线”的概念；消息产生者和消息消费者之间通过与总线交互进行通信，而不是彼此直接通信。

This establishes the notion of an "integration bus"; message producers and consumers communicate by interacting with the bus, not directly with each other.

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一次怀着一丝希望和怀疑，她找到通灵师这些宣称能听到死亡声音并看到死亡的通往生者和逝者之间的媒介。

At once hopeful and skeptical, she visited spiritualists, mediums and people who claimed to be able to record the voices of the dead and examined her own experience of bereavement.

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